baber/WOPTO huggingface dataset:
Patent KR-20040049213-A (KR)
Title: Heat pump system using a mixed heat source
Inventor: AHN HYEONG JUN
IPC: F25B30/06
Filed: 2002-12-05
Abstract: PURPOSE: A heat pump system using complex heat sources is provided to use underground heat as a main heat source and solar heat as an auxiliary heat source, thereby saving the maintenance cost for a heating/cooling system. CONSTITUTION: A heat pump system using complex heat sources includes a geothermal heat exchanger(10) mounted under the ground and having a heat transfer fluid for absorbing the geothermal heat. A solar heat exchanger(20) has a solar cell mounted at a position to be radiated by sun light, and is connected to the geothermal heat exchanger via conduits(13,23) for sharing the heat transfer fluid selectively. A heat pump(30) is supplied with the heat transfer fluid which accumulates the heat from the heat exchangers and carries out heat exchange with the heat transfer fluid to provide heat exchanged thermal energy to a place to use the energy. The heat exchangers are alternatively or simultaneously used under the control of a controller(40).
Patent KR-20040050759-A (KR)
Title: reactor heating and cooling device for hydrogen storage alloys
Inventor: HONG SANG UI
IPC: F25B17/12
Filed: 2002-12-09
Abstract: PURPOSE: Reactors of a cooling and heating apparatus using hydrogen-storage alloys are provided to improve the efficiency of heat exchange by improving the performance of heat conduction into an inner wall surface of a reacting container. CONSTITUTION: A reacting container(110) is formed in cylindrical shape, and is connected with a hydrogen inflow and outflow pipe(120). A porous heat transfer element(140) is formed of a metal material forming a foam shape, and is fixed in the reacting container. A contact part of the foam body and an inner wall surface of the reacting container is brazed to fix the foam body and the inner wall surface each other and largely form a contact area. A hydrogen-storage alloy is impregnated in the heat transfer element.
Patent KR-20040050767-A (KR)
Title: system and method for making remote fault diagnosis of a washing machine having speech recognition/synthesis functions, and informing an intention for providing a service for correcting a fault thereof
Inventor: CHOI SEONG BONG
IPC: G06Q10/10
Filed: 2002-12-09
Abstract: PURPOSE: A system and a method for remotely diagnosing a failure of an automatic washer having a sound recognizing/synthesizing function, and the method for informing a service providing opinion for eliminating the failure are provided to understand a basic cause of the failure by continuously monitoring/storing an operation state and a use history of the washer, and the use history of each parts in a database. CONSTITUTION: A drive microcomputer(22) controls the driving of a motor(20) and other load(21), and reads the operation state. A voice recognizing/synthesizing module(28) makes a user input the operation order or set the function through a voice, and informs the user of the information related to the function and the operation state through the voice. A memory(26) stores a washer operating algorithm, the washer related information including the use history and the operation state, and the data received from an external device. A web server(40) receives the washer related information through the Internet network and displays the information on a web page. A control server(42) judges the failure by comparing the washer related information from the web server and the washer related information stored in a database server.
Patent KR-20040052026-A (KR)
Title: Method for determining a repeated pattern, a frame interpolation method thereof and a frame interpolation apparatus thereof
Inventor: KANG JEONG U
IPC: H04N5/91
Filed: 2002-12-13
Abstract: PURPOSE: A repeated pattern judging method, a frame interpolation method using the same and an apparatus suitable for the same are provided to discriminate that a repeated pattern moves between frames. CONSTITUTION: An MAE(Mean Ratio Error) calculating unit(1202) obtains MAEs with respect to respective reference blocks, which exist in a search range with an (M+2P)x(N+2P) size of a frame which refers for searching a reference block and a motion vector, by a full search method. An MAE map storing unit(1204) stores (M+P)x(N+P) MAEs as a map type with an (M+P)x(N+P) size. A motion vector extracting unit(1206) judges positions(x,y) of horizontal and vertical directions of a reference block having the least MAE among the MAEs stored in the MAE map storing unit(1204) as an interframe motion direction with respect to a current block. A repeated pattern recognizing unit(1210) discriminates whether a repeated pattern exists with reference to the MAEs stored in the MAE map storing unit(1204). A frame interpolation unit(1212) performs frame interpolation using a motion vector extracted in the motion vector extracting unit(1206) and linear interpolation.
Patent KR-20030055135-A (KR)
IPC: H01L23/522
Filed: 2002-12-24
Abstract: 본 발명에 따른 반도체 장치는, 소자가 형성된 반도체 기판과, 상기 반도체 기판 상에 형성된 3 이하의 비유전률을 갖는 저유전율 절연막과, 상기 저유전율 절연막 내에 매립된 플러그 및 배선층과, 상기 저유전율 절연막과 상기 플러그 사이에서 상기 플러그 측면에 접하여 형성된 영율이 15㎬ 이상인 고영율 절연막을 포함한다.
Patent KR-20040056918-A (KR)
Title: Powdered Slag Coated LF Electrode
Inventor: LEE SUN BIN
IPC: C21C5/52
Filed: 2002-12-24
Abstract: PURPOSE: A slag powder coated LF electrode is provided to reduce loss of the electrode by heat generated by arc in the molten steel manufacturing process by coating slag powder on the surface of the electrode. CONSTITUTION: In an LF (ladle furnace) electrode used for manufacturing molten steel, the slag powder coated LF electrode is characterized in that a mixture of the slag powder and the waste brick powder is coated on the LF electrode after preparing slag powder having a grain size of 1 mm or less by pulverizing refined slag and preparing waste brick powder having a grain size of 1 mm or less by pulverizing waste bricks of ladle containing high alumina content.
Patent KR-20040057573-A (KR)
Title: Method of forming a copper wiring
Inventor: PARK JONG HYEOK
IPC: H01L21/28
Filed: 2002-12-26
Abstract: PURPOSE: A method for forming a copper interconnection is provided to prevent pollution of copper by forming a copper diffusion barrier layer on a rear surface of a wafer. CONSTITUTION: An interlayer dielectric(13) with damascene patterns is formed on a wafer(10). A barrier layer(17) and a seed layer(15) are formed on the damascene patterns. A copper diffusion barrier layer(100) is formed on the rear surface of the wafer. A copper film is then formed on the resultant structure. A copper interconnection is formed by planarizing the copper film to expose the interlayer dielectric.
Patent KR-20040059729-A (KR)
Title: Method for fabricating triple gate oxide of semiconductor device
Inventor: SHIN IL JAE
IPC: H01L21/31
Filed: 2002-12-28
Abstract: PURPOSE: A method for forming a triple gate oxide layer of a semiconductor device is provided to prevent the damage of a logic region by forming gate oxide layers with different thickness on the logic region, an I/O region and a high-voltage device region. CONSTITUTION: A nitride pattern is formed on a substrate(11) to expose a high-voltage device region. The first gate oxide layer(21) with the first thickness is formed on the exposed high-voltage device region. The nitride pattern on a logic and I/O region is selectively removed. Wells(22,23) are formed in the logic region and the I/O region, respectively. The second oxide layer(24) with the second thickness is formed on the I/O region. The third gate oxide layer(26) with the third thickness is formed on the logic region.
Patent KR-20040060566-A (KR)
Title: Mobile phone
Inventor: KIM JUN YEONG
IPC: H04B1/38
Filed: 2002-12-30
Abstract: PURPOSE: A mobile terminal for varying a screen size is provided to allow a user to receive various contents through a large screen by enlarging the screen of an internal LCD as necessary. CONSTITUTION: A plurality of keypads(103) are installed at an inner surface of a main body(100), and a battery(104) is detachably attached at a rear surface of the main body(100). An internal LCD(105) is installed at an inner surface of a folder(101) and an external LCD(106) is installed at an outer surface of the folder(101). One side of the external LCD(106) is coupled by a hinge(107) so as to be rotatable by 180 degrees. With the folder(101) closed, the user receives simple information through the external LCD(106). For voice call communication, the user opens the folder(101), and in this state, the user receives various contents through the internal LCD(106). By rotating the external LCD(106) by 180 degrees so as to be positioned at the side of the internal LCD(106), the screen size can be enlarged and in this state, the user can receive multimedia through the enlarged LCD screen.
Patent KR-20040061512-A (KR)
Inventor: JIN DAE GEUN
IPC: G11B21/02
Filed: 2002-12-31
Abstract: PURPOSE: A disk driver is provided to load a head for configuring the disk driver on a disk, or to stably maintain an unloaded state, thereby preventing the head from being damaged by outer shock while the head is unloaded. CONSTITUTION: A case(100) forms an outer shape of a disk driver. A disk(130) is mounted on a hub(110) of a spindle motor comprised within the case(100) by a clamp(120), and stores various information. A head records information on the disk(130), or reproduces the recorded information, and is mounted at an end of a suspension(150). The suspension(150) is mounted on a lower side of an actuator arm(160) to elastically move in vertical direction. The actuator arm(160) is rotatively mounted on a VCM(Voice Coil Motor)(170).
Patent KR-20020016894-A (KR)
IPC: C05B1/00
Filed: 2001-05-02
Abstract: 본 발명은 복수의 입자들을 포함하는 비료 조성물로서, 상기 입자들은 비료 부분 내에 매립된 복수의 황 플레이트렛(platelet)을 특징으로 하는 비료 조성물을 제공한다. 또한, 본 발명은 상기 조성물을 제조하는 방법으로서, 먼저 비료 함유 입자들을 황 분무액으로 분무하고, 이어서 비료 또는 그 전구체를 함유하는 슬러리로 분무한 후, 경화하는 단계를 포함하는 방법을 제공한다.
Patent KR-20020029766-A (KR)
Title: 전동 차량
IPC: B60R25/045
Filed: 2000-08-31
Abstract: 본 발명은 충전 가능한 2차 전지(30)와, 차륜 등의 주행부를 구동하는 전동기(9)와, 2차 전지(30)의 전력에 의해 전동기를 구동하기 위한 제어를 행하는 제어 수단(5)을 구비한 전동 차량(1)으로서, 패스워드를 기억하는 불휘발성 기억 수단(6)과, 패스워드를 입력하기 위한 표시ㆍ조작 수단(7)과, 그 표시ㆍ조작 수단(7)으로부터 입력된 패스워드가 기억 수단(6)에 기억되어 있는 패스워드와 일치했을 때에만 차량을 주행 가능 상태로 하는 수단[제어 수단(5)이 겸하여도 좋음]을 설치하는 것을 목적으로 한다.
Patent KR-20020064309-A (KR)
IPC: H01M4/62
Filed: 2000-10-26
Abstract: 본 발명은 탄소 섬유 및 탄소 섬유를 코팅하는 전기 전도성 입자를 포함하는, 리튬 이온 배터리에서 커넥터를 코팅하는 데 적합한 조성물에 관한 것이다. 전기 전도성 입자는 평균 입자 크기가 약 40 nm 미만이다. 바람직하게는, 평균 입자 크기는 약 30 nm이고, 비표면적이 약 1200 ㎡/g을 초과한다. 본 발명의 조성물을 사용하여 제조된 전극은 현저하게 향상된 전기 전도성, 셀내 용량 및 재생 특성을 가지는데, 이는 대체적으로 전체적으로 향상된 전기 전도성을 부여하는 향상된 결합 특성으로 인한 것이라 생각된다.
Patent KR-20020077502-A (KR)
Title: 메타 데이터 카테고리 및 정보 포탈을 구축하는 방법
IPC: G06F17/30
Filed: 2001-12-07
Abstract: 새로운 메타 데이터 카테고리 및 새로운 메타 데이터 카테고리를 공식화하는 사용자 프로파일에 따라 정보 포탈을 구축하는 방법을 개시되어 있다. 지금까지는 월드 와이드 웹의 사용자들이 웹상의 서비스들 및 어플리케이션들을 위치 지정하기가 매우 어려웠다. 왜냐하면 검색 엔진이 어떤 기능성 베이스상에서 보다 콘텐츠 베이스 상에서 웹 페이지들을 인덱싱하기 때문이다. 제공된 어플리케이션은 기능적 식별자들을 포함하는 새로운 메타 데이터 카테고리를 제안하다. 이러한 기능적 식별자들은, 기능적 방식으로 어플리케이션들/서비스들의 적절한 인덱싱을 제공하는 것인 단 하나의 목적을 갖는 전용 태스크 기술 언어(14)로 기록될 것이다. 본 발명은 부가하여 새로운 메타 데이터 카테고리를 공식화하는 정보 포탈의 발생에 관한 것이다.
Patent KR-20020093833-A (KR)
IPC: C07D487/22
Filed: 2001-03-08
Abstract: A tetrakis(hydroxyphenyl)chlorin, bacteriochlorin or isobacteriochlorin, derivatised at one or more of the hydroxy groups by addition reaction with a diisocyanate, diisothiocyanate or isocyanate-isothiocyanate at one isocyanate or isothiocyanate group thereof, the other isocyanate or isothiocyanate group being itself derivatised by addition reaction with the hydroxy group of an w-alkylated or acylated poly(alkylene oxide) or to a hydroxy group of a link residue itself carrying a residue of such poly(alkylene oxide).
Patent KR-20030004376-A (KR)
IPC: G02B1/04
Filed: 2002-02-26
Abstract: 내열성이 우수하고, 또 기판과의 밀착성도 우수한 광학소자의 제조방법이 제공된다.     습윤성이 큰 구역과 습윤성이 작은 구역이 규칙적으로 배열되어 있는 패턴 표면을 성형 표면으로서 갖는 기초재의 성형 표면에 광학소자형성용 액상 조성물을 부착시키고, 이어서 상기 조성물을 경화시켜 상기 습윤성이 큰 구역에 볼록부를 형성시키는 광학소자의 제조방법이다.     이 때 상기 광학소자형성용 액상 조성물로서 가수분해ㆍ축중합이 가능한 가수분해성 화합물 및 그의 가수분해ㆍ축중합물에서 선택되는 1종류 이상의 화합물을 함유하는 액을 사용한다.
Patent KR-20030051425-A (KR)
IPC: G06F19/00
Filed: 2002-09-20
Abstract: 본 발명은 인터페론 요법의 효능을 평가하는 데 사용할 수 있는, 인터페론 수용체 유전자의 한 영역에서 발견되는 다형성 마커를 제공한다.  따라서, 본 발명은 또한 개체에서 인터페론 요법의 효능을 평가하는 방법, 및 그러한 방법을 성취하기 위한 수단에 관한 것이다.
Patent KR-20030001519-A (KR)
IPC: C08L77/06
Filed: 2001-05-07
Abstract: 본 발명은 
     A) 폴리아미드, 
     B)  B1)  하나 이상의 비닐 단량체 50 내지 99 중량％를 
     B2) 유리 전이 온도가 10 ℃ 미만인 하나 이상의 그라프트 주사슬 50 내지 1 중량％상으로부터 괴상, 용액 또는 괴상-현탁 중합법을 사용하여 제조한 그라프트 중합체 또는 고충격 폴리스티렌, 
     C) 극성 기를 갖는 하나 이상의 열가소성 중합체를 포함하는 하나 이상의 상용성 매개체 및 임의로, 
     D) 하나 이상의 비닐 (공)중합체를 포함하는 중합체 블렌드에 관한 것이다.
Patent KR-20040063312-A (KR)
Title: Separable electric rice cooker with ceramic inner pot
Inventor: SON YOUNG SUK
IPC: A47J27/00
Filed: 2003-01-06
Abstract: PURPOSE: A separable electric rice cooker with a ceramic inner pot is provided to offer safety to a user by making an inner pot from ceramic, to simultaneously cook several foods by preparing separable steam pots, and to improve the health of the user by excluding heavy metal materials. CONSTITUTION: A separable electric rice cooker(1) includes a ceramic inner pot(2) made from such rough stones as a tourmaline. The inner pot is installed separably in the cooker. Separable outer pots(3) are installed in the cooker. Since the inner pot is made of ceramic instead of metals, the health of a user is improved. According to many pots in the cooker, various foods are prepared in the cooker at once.
Patent KR-20040064347-A (KR)
Inventor: LEE SEUNG JUN
IPC: H04W28/00
Filed: 2003-01-11
Abstract: PURPOSE: A method and apparatus for processing packet data are provided to perform encoding suitable for a data source, accurately control the amount of data transmission and effectively control a network. CONSTITUTION: A wired/wireless section discriminating unit(80) is positioned in a UTRAN(Universal Mobile Telecommunications Network Terrestrial Radio Access Network)(200) and logically positioned at an upper position of a RAN(Radio Access Network) protocol layer. The UTRAN(200) is a network for matching a wired section and a wireless section. The wired/wireless section discriminating unit(80) discriminates a transmission section of an RTP(Real-time Transport Protocol) packet by a wired section and a wireless section and processes the RTP packet transferred through the wired section from a core network(300), and transmits an RTCP(RTP Control Protocol) packet from an end of the wired section to a data source(70) to perform operations of the RTP and the RTCP. The wired/wireless section discriminating unit(80) broadcasts and/or multicasts the RTP packets received from the data source(70) to multiple terminals(100) through a downlink radio channel. Upon receiving the RTP packets, the terminals(100) transmits receiving state information with respect to the received RTP packets to the wired/wireless section discriminating unit(80) through the wireless section.
Patent KR-20040065618-A (KR)
Title: Gas valve
Inventor: LEE SEOK JAE
IPC: F16K31/02
Filed: 2003-01-15
Abstract: PURPOSE: A gas valve is provided to improve the reliability of a gas burner by preventing the change of gas flow. CONSTITUTION: A gas valve is composed of a coil(20) for generating electromagnetic force, a gas flow control unit(10) for controlling the flow of gas by the electromagnetic force, a basic resistor(30) connected to the coil in a series, and a valve control unit(40) connected to the coil and the basic resistor. The valve control unit measures the voltage of the basic resistor. The valve control unit increases the voltage supplied to the coil if the voltage of the basic resistor is increased, and decreases the voltage supplied to the coil if the voltage of the basic resistor is decreased.
Patent KR-20040067136-A (KR)
Inventor: YOON SANG HYEON
IPC: G06F3/14
Filed: 2003-01-21
Abstract: PURPOSE: A device and a method for display a GUI(Graphic User Interface) component matched with event information are provided to prevent an operation error of a program due to a user's mistake and offer the intuitiveness for the GUI by offering only the necessary GUI component depending on a program use environment. CONSTITUTION: An input part(200) receives the event information. A GUI component storage(100) stores the GUI components. A GUI component reader(400) reads out the GUI component matched with the inputted event information from the GUI component storage. A display part(500) makes a display device(600) display the read GUI component. An event information analyzer(300) calculates the analysis information matched with the event information if the GUI component before the event information input is not identical with the GUI component needed for the event information.
Patent KR-20040069149-A (KR)
Inventor: CHOI U HYEONG
IPC: H04L12/14
Filed: 2003-01-28
Abstract: PURPOSE: A multi-CDR for providing flexibility of billing data of a data network, a billing system, and a method for generating the multi-CDR are provided to perform a billing process for differentiated charges by dividing and recoding them in multiple CDRs and checking the same sequence ID. CONSTITUTION: A billing correction unit records correlated session IDs in the first field of one CDR so that a rate management system can recognize a plurality of CDRs as a group of CDRs(S100). The billing collection unit records billing related information in the second field of the CDR(S110). The billing collection unit records a sequence ID in which order information of the plurality of CDRs is recorded in the third field of the CDR(S120). When additional billing information is generated, the billing collection unit generates a new CDR(S130).
Patent KR-20030068459-A (KR)
Title: 단자구조
IPC: H05K1/18
Filed: 2003-02-13
Abstract: 본 발명은 랜드부, 및 볼의 박리강도가 큰 단자구조를 제공하는 것이다. 
     본 발명의 단자구조에 있어서, 랜드부(2)는 볼(7)을 납땜하기 위하여 단자부(3)와, 이 단자부(3)의 바깥 둘레부의 근방에 배치된 지지부(4)와, 단자부(3)와 지지부(4)를 연결하는 연결부(5)를 가지고, 기재(1) 상에는 단자부(3)의 바깥 둘레부에 위치하는 에지부(3a)를 포함하는 단자부(3) 전체가 노출한 상태에서, 지지부(4)를 덮도록 절연층(6)을 설치하고, 땜납(8)이 단자부(3)의 표면(3b)과 에지부(3a)에 걸쳐진 상태에서, 볼(7)이 단자부(3)에 납땜되었기 때문에, 단자부(3)로부터의 볼(7)의 박리, 및 기재(1)로부터의 단자부(3)의 박리강도가 큰 것이 얻어진다.
Patent KR-20040074563-A (KR)
Inventor: KIM MIN GYO
IPC: H04B1/40
Filed: 2003-02-19
Abstract: PURPOSE: A method for accessing a memory of a mobile communication terminal is provided to make a flash memory access algorithm reside in an RAM, and to set priorities between plural cores, thereby preventing the plural cores from simultaneously accessing a flash memory. CONSTITUTION: A system sets priorities for accessing a flash memory with regards to plural cores. When a core having a high priority does not access the flash memory, the system confirms whether a message access request is generated from a core having a low priority. If so, the core having the high priority permits the core having the low priority to access the flash memory during a predetermined time. If an interrupt is generated while accessing the flash memory, a message access action is suspended.
Patent KR-20040076049-A (KR)
Inventor: CHOI SUNG SOON
IPC: E04F19/08
Filed: 2003-02-24
Abstract: PURPOSE: A ceiling check hole is provided to simplify installation work by fitting to the side of a ceiling member, to make an assembling structure strong, to improve in appearance and to couple with a ceiling member firmly by forming a corner groove on an inner folding plane of a fitting part. CONSTITUTION: The ceiling check hole(A) comprises the steps of forming a support(1), a decorative frame and a supporting piece(3) one using synthetic resins, and forming a fitting part to the outside. A decorative frame is formed on the lower part of the support(1) by forming a flange in the T-shape, inclined projections(12,12') are formed on both ends to form an outer flange of the decorative frame to be shorter than an inner flange and to form a groove(13) on the surface, the supporting piece(3) is extended to the outside of the support(1) to fix a ceiling member on the upper part of the support(1) and to form a fitting part by the outer flange and the supporting piece(3), an inlet of the fitting part is formed to be narrower than the inner side and the decorative frame is thicker than the thickness of the supporting piece(3), and corner grooves(41) are formed on the inner folding plane of the fitting part.
Patent KR-20040076343-A (KR)
Inventor: CHO YUN JUN
IPC: H01L23/495
Filed: 2003-02-25
Abstract: PURPOSE: A mold for lead frame of a semiconductor package is provided to fix and release a module of a mold and a die holder housing each other by operating only a switch or inserting only a clamp pin. CONSTITUTION: A module(115) is horizontally inserted into a master die(100). A rear support member(118) is used for supporting a rear side of the module after the module is inserted into the master die. A clamping unit is used for supporting a front side of the module. The clamping unit is formed with a clamping member. The clamping member is moved to the perpendicular direction to the traveling direction of the module in order to prevent the relative motion between the module and the master die.
Patent KR-20040078247-A (KR)
Inventor: LEE GEUN SIK
IPC: E01F8/00
Filed: 2003-03-03
Abstract: PURPOSE: A fixture of a rotary soundproof plate is provided to intercept noise by a gap between a soundproof plate and a frame. CONSTITUTION: The fixture of a rotary soundproof plate comprises: an outer frame(100) installed between posts; a soundproof plate(200) fitted to a soundproof plate fitting hole(110) of the outer frame(100) and rotated by a hinge pin(210); and a packing(300) installed correspondingly to the soundproof plate of the outer frame(100) to fix a soundproof plate(200) closely and provided with a widening end(320) to prevent upward separation by guide grooves(311,312), a projected part(330) formed to be adhered closely to the end of the soundproof plate(200) and a hollow guide hole(340) formed longitudinally to have an elastic upper part of the projected part(330).
Patent KR-20040078509-A (KR)
Inventor: PARK SUN BOK
IPC: B21B33/00
Filed: 2003-03-04
Abstract: PURPOSE: An apparatus for releasing jammed part of hot rolled strip is provided to promptly draw out a jammed part of the strip and prevent safety accident accordingly by crossing upper and lower central axis lines between rolls in the state that roll gap is kept constant during jamming of the strip between rolls, thereby driving the rolls. CONSTITUTION: In upper and lower driving rolls through which the strip is threaded in the state that the strip is kept at a certain tension to remove foreign materials and scale deposited on the surface of a hot rolled strip (S), the apparatus for releasing jammed part of the hot rolled coil is characterized in that the lower driving roll comprises a cylindrical roll main body(110); idle rolls(150) movably inserted into grooves(140) formed along the outer circumferential surface of the roll main body with being spaced apart from each other in a certain distance; a plurality of operating elements rotationally inserted into a cut part at both sides the roll main body between the idle rolls so that the idle rolls are closely adhered to each other by the centrifugal force of the roll main body, restricted to idle roll shaft of the idle rolls by a wire whose tension is controlled via a pulley formed on a side end surface of the roll main body, and always elastically pressed clockwise by pin spring inserted into shaft pin that is a rotation center of the operating elements; and an operating cylinder(210) comprising a grip member(230) for axially moving the idle rolls by pushing the idle roll shaft to a side adjacent to a base (B) to which the upper and lower driving rolls are fixed.